try:
  n = int(input())
  if(n>=400 and n<=599):
    print(8)
  elif(n>=600 and n<=799):
    print(7)
  elif(n>=800 and n<=999):
    print(6)
  elif(n>=1000 and n<=1199):
    print(5)
  elif(n>=1200 and n<=1399):
    print(4)
  elif(n>=1400 and n<=1599):
    print(3)
  elif(n>=1600 and n<=1799):
    print(2)
  elif(n>=1800 and n<=1999):
    print(1)
except EOFError:
  print(" ") try:
  n = int(input())
  if(n>=400 and n<=599):
    print(8)
  elif(n>=600 and n<=799):
    print(7)
  elif(n>=800 and n<=999):
    print(6)
  elif(n>=1000 and n<=1199):
    print(5)
  elif(n>=1200 and n<=1399):
    print(4)
  elif(n>=1400 and n<=1599):
    print(3)
  elif(n>=1600 and n<=1799):
    print(2)
  elif(n>=1800 and n<=1999):
    print(1)
except EOFError:
  print(" ") except EOFError:
  print(" ") print(" ") print " " n = int(input()) n int(input()) int input() input if(n>=400 and n<=599):
    print(8)
  elif(n>=600 and n<=799):
    print(7)
  elif(n>=800 and n<=999):
    print(6)
  elif(n>=1000 and n<=1199):
    print(5)
  elif(n>=1200 and n<=1399):
    print(4)
  elif(n>=1400 and n<=1599):
    print(3)
  elif(n>=1600 and n<=1799):
    print(2)
  elif(n>=1800 and n<=1999):
    print(1) n>=400 and n<=599 n>=400 n 400 n<=599 n 599 print(8) print 8 elif(n>=600 and n<=799):
    print(7)
   n>=600 and n<=799 n>=600 n 600 n<=799 n 799 print(7) print 7 elif(n>=800 and n<=999):
    print(6)
   n>=800 and n<=999 n>=800 n 800 n<=999 n 999 print(6) print 6 elif(n>=1000 and n<=1199):
    print(5)
   n>=1000 and n<=1199 n>=1000 n 1000 n<=1199 n 1199 print(5) print 5 elif(n>=1200 and n<=1399):
    print(4)
   n>=1200 and n<=1399 n>=1200 n 1200 n<=1399 n 1399 print(4) print 4 elif(n>=1400 and n<=1599):
    print(3)
   n>=1400 and n<=1599 n>=1400 n 1400 n<=1599 n 1599 print(3) print 3 elif(n>=1600 and n<=1799):
    print(2)
   n>=1600 and n<=1799 n>=1600 n 1600 n<=1799 n 1799 print(2) print 2 elif(n>=1800 and n<=1999):
    print(1) n>=1800 and n<=1999 n>=1800 n 1800 n<=1999 n 1999 print(1) print 1 n = int(input()) int(input()) n
try:
  n = int(input())
  if(n>=400 and n<=599):
    print(8)
  elif(n>=600 and n<=799):
    print(7)
  elif(n>=800 and n<=999):
    print(6)
  elif(n>=1000 and n<=1199):
    print(5)
  elif(n>=1200 and n<=1399):
    print(4)
  elif(n>=1400 and n<=1599):
    print(3)
  elif(n>=1600 and n<=1799):
    print(2)
  elif(n>=1800 and n<=1999):
    print(1)
except EOFError:
  print(" ")